A-IPC EXAMINATION PREP STUDY GUIDE
LATEST UPDATED PRACTICE SOLUTION
VERIFIED 100 PERCENT
◉ The bacterium most likely to be transmitted from mother to infant
during labor and cause neonatal sepsis is:
a. Escherichia coli
b. Staphylococcus aureus
c. Group B Streptococcus
d. Group A Streptococcus. Answer: c. Group B Streptococcus
◉ Which of the following is an example of the criterion of "Strength
of the Association" from Hill's criteria for causation?
a. In a study of the association between antibiotic exposure and
development of C. difficile infection, the odds ratio was 2:3
b. In a study of the association between antibiotic exposure and
development of C. difficile infection, the authors' conclusions are
consistent with those of three other studies
c. In a study of the association between antibiotic exposure and
development of C. difficile infection, antibiotic therapy began an
average of 3 weeks before C. difficile infection developed
d. In a study of the association between antibiotic exposure and
development of C. difficile infection, prolonged antibiotic therapy
was a greater risk factor for C. difficile infection than short-term
antibiotic therapy. Answer: a. In a study of the association between
,antibiotic exposure and development of C. difficile infection, the odds
ratio was 2:3
◉ Which of the following rules should be followed when collecting a
stool sample for C. difficile testing?
1) Stool sample should be freshly passed within 1-2 hours
2) 10-20mL. of formed stool should be collected
3) Stool should be passed into a clean, dry container
4) Specimens should be obtained before antimicrobial agents have
been administered
a. 1, 2
b. 2, 3
c. 1, 3
d. 1, 4. Answer: c. 1, 3
◉ What type of meningitis would be most consistent with the
following cerebrospinal fluid (CSF) report result:
Glucose= Decreased; Protein= Elevated; WBC counts= 1,000/mm3
a. Bacterial
b. Viral
c. Fungal
d. Tuberculosis. Answer: a. Bacterial
◉ The following blood culture result should be considered a potential
contaminant:
,a. A positive result of coagulase-negative staphylococci from two sets,
2 days apart, without symptoms
b. A positive result of S. aureus from one bottle in a patient with a
temperature of 38.6°C
c. A positive result of E. coli from one bottle in an afebrile patient
with diarrhea
d. A positive result of Candida albicans in a fungal blood culture in a
patient with a urinary tract infection. Answer: a. A positive result of
coagulase-negative staphylococci from two sets, 2 days apart, without
symptoms
◉ Which of the following organisms have been associated with the
transmission of infections after body piercing?
1) Atypical Mycobacterium species
2) Staphylococcus species
3) Pseudomonas species
4) Haemophilus species
a. 1, 2, 3
b. 2, 3, 4
c. 1, 3, 4
d. 1, 2, 4. Answer: a. 1, 2, 3
◉ The Director of the Operating Room (OR) requests that the OR
surfaces be routinely environmentally cultured. The IP's best response
should be:
, a. A schedule for routine culturing of the OR should be arranged so
that each room is cultured at a set interval
b. Routine culturing of the OR should be done in the absence of any
epidemiologic investigations in that area
c. Routine culturing should not be done because it is too expensive
d. Routine environmental culturing should not be considered unless
an epidemiologic investigation is being conducted. Answer: d.
Routine environmental culturing should not be considered unless an
epidemiologic investigation is being conducted
◉ All of the following may be indications of a heating, ventilation,
and air conditioning (HVAC) malfunction except:
a. An increase in the postoperative surgical site infection (SSI) rates
b. A single case of aspergillosis in a severely immunosuppressed
patient
c. Healthcare-associated varicella infections
d. An outbreak of ventilator-associated Acinetobacter infections in the
Intensive Care Unit (ICU). Answer: d. An outbreak of ventilator-
associated Acinetobacter infections in the Intensive Care Unit (ICU)
◉ A patient who underwent intraocular surgery was diagnosed with a
noninfectious endopthalmitis after the procedure. The IP initiates an
investigation to identify the possible cause. Which of the following
factors should be considered?
1) Improper handling, cleaning, and rinsing of the instruments
2) Improper labeling of the solutions
3) Gloves and powder
LATEST UPDATED PRACTICE SOLUTION
VERIFIED 100 PERCENT
◉ The bacterium most likely to be transmitted from mother to infant
during labor and cause neonatal sepsis is:
a. Escherichia coli
b. Staphylococcus aureus
c. Group B Streptococcus
d. Group A Streptococcus. Answer: c. Group B Streptococcus
◉ Which of the following is an example of the criterion of "Strength
of the Association" from Hill's criteria for causation?
a. In a study of the association between antibiotic exposure and
development of C. difficile infection, the odds ratio was 2:3
b. In a study of the association between antibiotic exposure and
development of C. difficile infection, the authors' conclusions are
consistent with those of three other studies
c. In a study of the association between antibiotic exposure and
development of C. difficile infection, antibiotic therapy began an
average of 3 weeks before C. difficile infection developed
d. In a study of the association between antibiotic exposure and
development of C. difficile infection, prolonged antibiotic therapy
was a greater risk factor for C. difficile infection than short-term
antibiotic therapy. Answer: a. In a study of the association between
,antibiotic exposure and development of C. difficile infection, the odds
ratio was 2:3
◉ Which of the following rules should be followed when collecting a
stool sample for C. difficile testing?
1) Stool sample should be freshly passed within 1-2 hours
2) 10-20mL. of formed stool should be collected
3) Stool should be passed into a clean, dry container
4) Specimens should be obtained before antimicrobial agents have
been administered
a. 1, 2
b. 2, 3
c. 1, 3
d. 1, 4. Answer: c. 1, 3
◉ What type of meningitis would be most consistent with the
following cerebrospinal fluid (CSF) report result:
Glucose= Decreased; Protein= Elevated; WBC counts= 1,000/mm3
a. Bacterial
b. Viral
c. Fungal
d. Tuberculosis. Answer: a. Bacterial
◉ The following blood culture result should be considered a potential
contaminant:
,a. A positive result of coagulase-negative staphylococci from two sets,
2 days apart, without symptoms
b. A positive result of S. aureus from one bottle in a patient with a
temperature of 38.6°C
c. A positive result of E. coli from one bottle in an afebrile patient
with diarrhea
d. A positive result of Candida albicans in a fungal blood culture in a
patient with a urinary tract infection. Answer: a. A positive result of
coagulase-negative staphylococci from two sets, 2 days apart, without
symptoms
◉ Which of the following organisms have been associated with the
transmission of infections after body piercing?
1) Atypical Mycobacterium species
2) Staphylococcus species
3) Pseudomonas species
4) Haemophilus species
a. 1, 2, 3
b. 2, 3, 4
c. 1, 3, 4
d. 1, 2, 4. Answer: a. 1, 2, 3
◉ The Director of the Operating Room (OR) requests that the OR
surfaces be routinely environmentally cultured. The IP's best response
should be:
, a. A schedule for routine culturing of the OR should be arranged so
that each room is cultured at a set interval
b. Routine culturing of the OR should be done in the absence of any
epidemiologic investigations in that area
c. Routine culturing should not be done because it is too expensive
d. Routine environmental culturing should not be considered unless
an epidemiologic investigation is being conducted. Answer: d.
Routine environmental culturing should not be considered unless an
epidemiologic investigation is being conducted
◉ All of the following may be indications of a heating, ventilation,
and air conditioning (HVAC) malfunction except:
a. An increase in the postoperative surgical site infection (SSI) rates
b. A single case of aspergillosis in a severely immunosuppressed
patient
c. Healthcare-associated varicella infections
d. An outbreak of ventilator-associated Acinetobacter infections in the
Intensive Care Unit (ICU). Answer: d. An outbreak of ventilator-
associated Acinetobacter infections in the Intensive Care Unit (ICU)
◉ A patient who underwent intraocular surgery was diagnosed with a
noninfectious endopthalmitis after the procedure. The IP initiates an
investigation to identify the possible cause. Which of the following
factors should be considered?
1) Improper handling, cleaning, and rinsing of the instruments
2) Improper labeling of the solutions
3) Gloves and powder
